User Documentation

5 Detailed descriptions of safe modules | Safe power-feed module UR20-PF-O-1DI-SIL
55u-remote IP20 modules for functional safety manual 1484600000/07/11.2020
1DI-SIL
Module status LED
Green: Communication on system bus
1.1 Yellow: Safety circuit 0 OK
4.2 Yellow: 24VSafe output active
4.3 Green: Feed-in voltage in valid range
LED indicators UR20-PF-O-1DI-SIL, error messages see Chapter7
System
bus
U
SYS
U
IN
U
OUT
µC
µC
µC
24V Safe
GND
Safety
DC
DC
1
2
3
4
Man Start 1
Man Start 2
Autostart 1
Autostart 2
S 11
S 12
S 21
S 22
24V Safe
24V
GND
Type 3
Block diagram UR20-PF-O-1DI-SIL (see also sample design in chapter 4.1)
Starting up a safe power-feed module
Please proceed as follows to start-up a UR20-PF-O-1DI-SIL
module:
▶ Connect the provided safety device to S11 to S22 and
release the device (unlock).
▶ Connect the 24VDC voltage supply to 4.3 and 4.4 of
the module.
▶ Switch on the u-remote station.
▶ Operate the manual start.
▶ Operate the manual start once more for each cascaded
UR20-PF-O-X-SIL-Modul.